<template>
  <view v-if="goods_info.goods_name" class="goods-detail-container">
    <!-- 轮播图区域 -->
    <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
      <swiper-item v-for="(item,i) in goods_info.pics" :key="i">
          <image :src="item.pics_big" @click="preview(i)"></image>
      </swiper-item>
    </swiper>
    
    <!-- 商品信息区域 -->
    <view class="goods-info-box">
        <!-- 商品价格 -->
        <view class="price">￥{{goods_info.goods_price}}</view>
      <!-- 商品信息主体区域 -->
        <view class="goods-info-body">
            <!-- 商品的名字 -->
            <view class="goods-name">{{goods_info.goods_name}}</view>
            <!-- 收藏 -->
            <view class="favi">
              <uni-icons type="star" size="18" color="gray"></uni-icons>
              <text>收藏</text>
            </view>
        </view>
        <!-- 运费 -->
        <view class="yf">快递：免费</view>
        
    </view>
    
    <rich-text :nodes="goods_info.goods_introduce"></rich-text>
    
    <!-- 商品导航组件区域 -->
    <view class="goods_nav">
      <uni-goods-nav :fill="true" :options="options" :buttonGroup="buttonGroup" @click="onClick" @buttonClick="buttonClick" />
    </view>
    
    
  </view>
</template>

<script>
  
  import { mapState, mapMutations,mapGetters } from 'vuex'
  
  
  
  export default {
    computed: {
        ...mapState('m_cart',['']),
        ...mapGetters('m_cart',['total'])
    },
    //定义一个监听器
    watch:{
      //1.监听total值的变化，通过第一个形参得到变化后的新值
        // total(newVal){
        //   //2.通过数组的find()方法,找到购物车按钮的配置对象
        //   const findResult = this.options.find(x => x.text === '购物车')
        //   if(findResult){
        //     //3.动态为购物车按钮的info属性赋值
        //     findResult.info = newVal
        //   }
        // }
        total: {
          handler(newVal){
            const findResult = this.options.find(x => x.text === '购物车')
            if(findResult){
              findResult.info = newVal
            }
          },
          //immediate属性用来声明次侦听器,是否在页面初次加载完毕后立即调用
          immediate: true
        }
    },
    data() {
      return {
        goods_info: {},
          options: [{
            icon: 'shop',
            text: '店铺',
            infoBackgroundColor: '#007aff',
            infoColor: "red"
          }, {
            icon: 'cart',
            text: '购物车',
            info: 0
          }],
          buttonGroup: [{
              text: '加入购物车',
              backgroundColor: '#ff0000',
              color: '#fff'
            },
            {
              text: '立即购买',
              backgroundColor: '#ffa200',
              color: '#fff'
            }
          ]
        
        
      }
    },
    onLoad(options){
      const goods_id = options.goods_id;
      this.getGoodsDetail(goods_id)
      console.log(options);
    },
    methods: {
      ...mapMutations('m_cart',['addToCart']),
      async getGoodsDetail(goods_id){
        const { data: res} = await uni.$http.get('/api/public/v1/goods/detail',{goods_id})
        if(res.meta.status !== 200 ){
          return uni.$showMsg()
        }
        //去除图片底部空白间隙replace(/<img /g,'<img style="display:block;"  ')
        //解决.webp格式图片在手机上无法显示的问题replace(/webp/g,'jpg')
       res.message.goods_introduce  = 
       res.message.goods_introduce.replace(/<img /g,'<img style="display:block;"  ').replace(/webp/g,'jpg')
        
        this.goods_info = res.message
      },
      preview(i){
         uni.previewImage({
                 current: i,
                 urls: this.goods_info.pics.map(x => x.pics_big)
          })
      },
      onClick(e){
        if(e.content.text === '购物车'){
          uni.switchTab({
            url:'/pages/cart/cart'
          })
        }
      },
      buttonClick(e){
        if(e.content.text === '加入购物车'){
          //组织商品的信息对象
          //{goods_id,goods_name,goods_price,goods_count,goods_small_logo,goods_state}
          const goods = {
            goods_id: this.goods_info.goods_id,
            goods_name: this.goods_info.goods_name,
            goods_price: this.goods_info.goods_price,
            goods_count: 1,
            goods_small_logo: this.goods_info.goods_small_logo,
            goods_state: true
          }
          
          //调用addToCart方法
          this.addToCart(goods)
          
        }
        
        
      }
      
    }
  
  }
</script>

<style lang="scss">

swiper{
  
  height: 750rpx;
  image{
    width: 100%;
    height: 100%;
    
  }
  
}


.goods-info-box{
  padding: 10px;
  padding-right: 0;
  .price{
    color: #C00000;
    font-size: 18px;
    margin: 10px 0;
  }
  
  .goods-info-body{
    display: flex;
    justify-content: space-between;
    .goods-name{
      font-size: 13px;
      margin-right: 10px;
    }
    .favi{
      width: 120px;
      font-size: 12px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      border-left: 1px solid #efefef;
      color: gray;
    }
    
  }
  .yf{
    font-size: 12px;
    color: gray;
    margin: 10px 0;
  }
  
}

.goods_nav{
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
}

.goods-detail-container{
  padding-bottom: 50px;
}







</style>




























